At the University of Maine’s Folger Library this Wednesday, cartographer Michael Hermann and Penobscot Nation Tribal Historian James Francis will give a presentation on the Thoreau-Wabanaki Trail Map. “‘The Process of Map Design: equal cartographic voice’ will be an opportunity to understand more about the trails taken by Thoreau and the Penobscot Indian guides who accompanied him, as well as the unique collaborative process that led to the map’s creation.”